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'use strict';
const _ = require('lodash');
const { replaceIdByPrimaryKey } = require('../utils/primary-key');
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module.exports = function createQuery(opts) {
return new Query(opts);
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};
class Query {
constructor({ model, connectorQuery }) {
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this.connectorQuery = connectorQuery;
this.model = model;
}
get orm() {
return this.model.orm;
}
get primaryKey() {
return this.model.primaryKey;
}
get associations() {
return this.model.associations;
}
async executeHook(hook, ...args) {
if (_.has(this.model, hook)) {
await this.model[hook](...args);
}
}
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/**
* Run custom database logic
*/
custom(mapping) {
if (typeof mapping === 'function') {
return mapping.bind(this, { model: this.model });
}
if (!mapping[this.orm]) {
throw new Error(`Missing mapping for orm ${this.orm}`);
}
if (typeof mapping[this.orm] !== 'function') {
throw new Error(`Custom queries must be functions received ${typeof mapping[this.orm]}`);
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}
return mapping[this.model.orm].call(this, { model: this.model });
}
async find(params = {}, ...args) {
const newParams = replaceIdByPrimaryKey(params, this.model);
await this.executeHook('beforeFetchAll', newParams, ...args);
const results = await this.connectorQuery.find(newParams, ...args);
await this.executeHook('afterFetchAll', results);
return results;
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}
async findOne(params = {}, ...args) {
const newParams = replaceIdByPrimaryKey(params, this.model);
await this.executeHook('beforeFetch', newParams, ...args);
const result = await this.connectorQuery.findOne(newParams, ...args);
await this.executeHook('afterFetch', result);
return result;
}
async create(params = {}, ...args) {
const newParams = replaceIdByPrimaryKey(params, this.model);
await this.executeHook('beforeCreate', newParams, ...args);
const entry = await this.connectorQuery.create(newParams, ...args);
await this.executeHook('afterCreate', entry);
return entry;
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}
async update(params = {}, ...args) {
const newParams = replaceIdByPrimaryKey(params, this.model);
await this.executeHook('beforeUpdate', newParams, ...args);
const entry = await this.connectorQuery.update(newParams, ...args);
await this.executeHook('afterUpdate', entry);
return entry;
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}
async delete(params = {}, ...args) {
const newParams = replaceIdByPrimaryKey(params, this.model);
await this.executeHook('beforeDestroy', newParams, ...args);
const entry = await this.connectorQuery.delete(newParams, ...args);
await this.executeHook('afterDestroy', entry);
return entry;
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}
async count(params = {}, ...args) {
const newParams = replaceIdByPrimaryKey(params, this.model);
await this.executeHook('beforeCount', newParams, ...args);
const count = await this.connectorQuery.count(newParams, ...args);
await this.executeHook('afterCount', count);
return count;
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}
async search(params = {}, ...args) {
const newParams = replaceIdByPrimaryKey(params, this.model);
await this.executeHook('beforeSearch', newParams, ...args);
const results = await this.connectorQuery.search(newParams, ...args);
await this.executeHook('afterSearch', results);
return results;
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}
async countSearch(params = {}, ...args) {
const newParams = replaceIdByPrimaryKey(params, this.model);
await this.executeHook('beforeCountSearch', newParams, ...args);
const count = await this.connectorQuery.countSearch(newParams, ...args);
await this.executeHook('afterCountSearch', count);
return count;
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}
}